Model M631 is a programmable RTD simulator with range from 16 Ω to 400 kΩ and with its 0.01°C accuracy and 0.001°C resolution is a good laboratory reference.
Basic accuracy is 0.003 %. Best resolution at the lowest range is 100 µΩ.
The Decade contains stable foil resistors with low temperature coefficient switched by low thermal voltage relays.
Built-in software contains function of RTD temperature sensor simulation with parameters according to IEC (DIN) or US standards, temperature setting in degree of Celsius or Fahrenheit.
Instrument can be controlled via RS232, USB, LAN or GPIB interface.
M631 is sophisticated instrument with its own recalibration procedure.
The procedure enables to correct any deviation in resistance without any mechanical adjusting.
The Decade box is designed for checking parameters of resistance meters, regulators and process meters that use external resistance sensors for non-electric quantity measuring.
Resistance: 16 Ω - 400 kΩ, max dissipation power 0.25 W± 20 ppm / year
Temperature: RTD ± 0.01°C / year, resolution 0.001°C